二维网格生成技术及其应用

本文采用解析变换生成二维贴体、正交网格。对变换的精度及对流场解的影响以及如何对网格生成进行控制、形成与流场参数变化相适应的网格分布等问题以NACA0012翼型为例进行了深入地探讨,并成功地应用于欧拉方程数值解。

TWO-DIMENSIONAL MESH GENERATION TECHNIQUESAND APPLICATION

This paper utilizes a series of analytical transformations to generate two-dimensional curvefitted, orthogonal meshes. The generated meshes can be regulated and controlled according to the variation of the flow parameters in the flow field so as to obtain the optimal grid distribution. As an example, taking unsteady transonic flows over oscillating NACA 0012 airfoil, the effects of transformation accuracy on computation accuracy of flow field, and how to control the grid generation corresponding with the variation of the flow parameters are analyzed in detail.The proceeding techniques have been applied to solve Euler equations with succes and the numerical results are satisfactory.